A null pointer dereference in the spoolss server can crash the process serving the connection if the client doesn't specify a servername.
Created attachment 8455 [details]
The patch also applies cleanly to v4-0-test.
Karolin, please add the patch to 3.6 and 4.0. Thanks!
Pushed to v3-6-test and autobuild-v4-0-test.
Pushed to v4-0-test.
Closing out bug report.